Hoop-cutting machine



(N0 Model.)

Zie/r,

P. L. WILSON. Hoop Cutting Machine.

Patented March 1,1881.

UNITED STATES PATENT OFFICE.

FITZLAND L. WILSON, OF SAGINAW, MICHIGAN.

HOOP-CUTTING MACHINE.

SPECIFICATION forming part of Letters Patent No. 238,467, dated March 1, 1881. Application filed J'uly 31, 1880. (No model.)

To all whom it may concern:

Be it known that I, FITZLAND L. WILSON, of the city and county of Saginaw, and State of Michigan, have invented an Improvement in HoopGutting Machines, of which the following is a specification.

My invention is designed to eut beveled strips directly from a log; and it consists ot' a slide, propelled by suitable mechanism, and carrying two cutters at rightangles to each other, and a third cutter inclined to both.

My invention further consists in certain details ot' construction hereinafter more fully set forth.

Figure l is a perspective view of my improved machine. Fig. 2 is a vertical crosssection.

In the accompanying drawings, which form a part of this specification, A is a stationary guide of suitable length, and it isv securely bolted or fastened to a proper frame.

B is a slide having a reciproca-ting movement along the guide, and held thereto by proper cheeks a, or other devices to that end. Friction-.rollers might be properly employed to relieve the'i'riction connected with this motion. The slide B consists of the vertical upright part b and a projecting horizontal flan ge or lip, c. To the vertical part of this slide are secured and project therefrom the cut-terknives, d (I, arranged in pairs, and one of each pair in advance of the other, as shown. rI wo such pairs are employed, and between these two sets ot' knives, and fastened in a vertical position to the front of the iiange c6 is the double cutter-knife d.

By an examination of Fig. 2, where C represents a section of a log, it will be observed that the relative position of each set of knives to the double cutter d is such that their combined action upon thelog (the slide being supported in motion) will cut therefrom a pair of bevel hoops at each stroke, the second set of knives being reversed to the first cuttingknives, and cutting at the return-stroke. The log C in this case is fed to the knives by any of the known mechanical appliances adapted to that purpose, the slide B having no other movement besides its reciprocating one. This mode of cutting hoops will naturally compress the timber between the knives and between the knives and the parts or tlanges b c. To relieve such compression, which if not provided for would render the whole device impracticable, I countersink all or such portion of the lauges b and c as are opposite the knives to such a degree as will relieve such compression and allow the hoops to be easily cut. In Fig. l this countersunk portion m is shown to extend in the flange c from e tof, and the countersink a in the upright part b is shown to extend from g to h. The slide is driven in its reciprocations by any convenient power.

What I claim as my invention is- 1. A slide having suitable propelling mechanism and carrying two cutters at right angles to each other, and a third cutter inclined to both the other cutters, substantially as described, and for the purpose set t'orth.

2. A slide having suitable propelling mechanisrn and countersunk as described, and carrying two cutters at right angles to each other, and a third cutter inclined to both the other cutters, substantially as described, and for the purpose set forth.

3. The combination, with the guide A, of the slide B, having the ange c, cutter df, secured to said ange, and cutters dd, one of the latter cutters being arranged at right angles to the cutter d', and the other cutter, d, inclined to both cutters, substantially as described, and for the purpose set forth.

4. rIhe combination, with the guide A and slide B, having the iiange c and countersinks n m, of the cutters d d d', two of said cutters being arranged at right angles to each other, and the third cutter inclined to both the other cutters, substantially as described, and for the purpose set forth.

H. S. SPRAGUE, CHARLES J. HUNT. 

